General Boards > Technical Support
No Air Pressure??
Eric Maclean Co-Admin:
Roger
With your air drier it is often cheaper to buy a complete rebuilt unit than it is to buy individual parts to repair one.
Do you know which model and make the air dryer is.
If you have a haldex pure air plus like the one in the link below and decide to change the filter cartridge try to get it loosened before you remove the unit from the vehicle chassis as they can be seized on and take a lot of torque to get them to come loose.
https://www.anythingtruck.com/product/052-170DA33100.html
Hope this helps
Eric
Roger Milne:
--- Quote from: Eric Maclean Co-Admin on April 10, 2026, 12:15:22 PM ---Roger
With your air drier it is often cheaper to buy a complete rebuilt unit than it is to buy individual parts to repair one.
Do you know which model and make the air dryer is.
If you have a haldex pure air plus like the one in the link below and decide to change the filter cartridge try to get it loosened before you remove the unit from the vehicle chassis as they can be seized on and take a lot of torque to get them to come loose.
Hey Eric,
Thanks for the reply.
Yeah we only reached or new RV home base yesterday and will be here for at least the next couple months while we search for a home. But to answer your question, No that doesn't seem to be the same style. I'll take a pic of it in a little bit and post it but it is at least accessible as it's right in the rear engine compartment by the door and I will remove the cartridge before hand as I agree trying to remove that after the body is off would be troublesome. I can't for the life of me figure out why the body would just start to leak, but removal will hopefully reveal what failed and then the search for the replacement will begin.
--- End quote ---
Richard Davis:
Roger
Considering the age of your coach, I suspect your air dryer is a Wabco 1200 series. Be aware that there are LOTS of generic after-market knock-offs of this dryer that sell very cheap ($50 to $100). Some have had success with them, others have been disappointed. The actual Wabco dryer is very expensive. So, be forwarned when you are shopping.
Roger Milne:
--- Quote from: Richard Davis on April 10, 2026, 05:03:59 PM ---Roger
Considering the age of your coach, I suspect your air dryer is a Wabco 1200 series. Be aware that there are LOTS of generic after-market knock-offs of this dryer that sell very cheap ($50 to $100). Some have had success with them, others have been disappointed. The actual Wabco dryer is very expensive. So, be forwarned when you are shopping.
--- End quote ---
That is a fascinating reply because I actually just got off the Webco webpage looking at one and yes it is a 1200 series and they run about 550 bucks and the same looking model I hadn’t looked at the exact part number but are on Amazon for about 80 to 100 bucks so very good to know thank you for the heads up
Eric Maclean Co-Admin:
Roger
Here is the service sheet for the 1200 series wabco dryer it might help you determine where or what is leaking..
https://www.wabco-customercentre.com/catalog/docs/mm34_web.pdf
Eric
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